Revenue has seized 8.3 million smuggled cigarettes at Dublin Port.
They were discovered on Wednesday as part of an intelligence-led operation.
Officers seized the cigarettes that arrived on a vessel from Rotterdam.
They were in a shipping container labeled 'car parts'.
The cigarettes were 'cheap whites' branded 'RGD Magnum' and 'Mark 1' with a retail value of over €4.5m.
Revenue say this represents a potential loss to the exchequer of of €3.6m.